Insulating composition



Patented Jan. 25, 1938 UNITED STATES INSULATING COMPOSITION Eberhard F. Mees, Milwaukee, Wis.

No Drawing. Application May 20, 1936, Serial No. 80,791

1 Claim.

This invention appertains to a plastic. composition particularly adaptable for use as an insulation on pipes and other conduits or containers needing protection from cold or material changes in temperature.

One of the primary objects of my invention is to provide a water-proof plastic composition which can be readily moulded about a pipe or container into intimate binding contact therewith, so as to effectively prevent the creeping of air or moisture between the pipe or container and the insulation, the composition being particularly designed for use in connection with cold water pipes, ammonia, brine and all kinds of refrigerating pipes, flush tanks, etc., for protecting said pipes or tanks against sweating and frosting and deterioration from such causes.

Another salient object of my invention is to provide a simple, durable, and inexpensive insu lating material of acid and water-proof character, which can be expeditiously applied to pipes, tanks, etc., without pre-moulding and with the expenditure of a minimum amount of time and money.

With these and other objects in view the invention consists in the novel combination anol mixing of certain ingredients which will now be specifically set forth.

The composition preferably consists of a mixture of rosin, varnish, wood flour, and Toluol." The rosin and varnish constitute a water-proof binder for the wood flour, which acts as a filler and a cold insulator in the mixture. The Toluol is a solvent and a quick-drying agent and insures the proper cohesion of the various constituents to form a plastic mass of the consistency of putty.

In making the mixture, I dissolve by heat 7%; lbs. of rosin and thoroughly mix therewith from 2% to 2 lbs. of varnish. These two ingredients are thoroughly stirred, and the pouring of the varnish in the rosin will somewhat lower the temperature thereof. The mixture is then re-heated so as to insure the dissolving of these two elements and the thorough commingling thereof.

To this mixture I then add 2 lbs. of finely comminuted wood flour. Before this liquid mixture is cool I add between 2 and 2 lbs. of

This mixture is then allowed to cool, and the same will be found to have a consistency of soft putty. Thus, a readily mouldable composition is formed, which can be easily and quickly placed about a pipe, conduit, or flush tank with the hands. In some instances the composition can be placed in position on the pipe and held by a suitable wrapping of muslin, or like material. The composition will readily adhere to the surface and form a liquid-tight connection therewith, so as to prevent the creeping of air and moisture between the pipe or tank and composition.

The composition is particularly adaptable for use on refrigerating and cold water pipes, in that the compound will effectively prevent the frosting of refrigerating pipes and the sweating of cold water pipes. Obviously,'where the composition is used on flush tanks, such tanks will also be protected against sweating.

The composition can be placed in metal or other containers for shipment, and where the composition is to be left in the container for a long period of time, linseed oil can be utilized with the composition to maintain the same in its plastic condition. I preferably use A,, pt. of linseed oil with the ingredients in the. proportions specified above. I

While the ingredients previously set forth are the preferred ingredients and give thebest results, I realize that substitutions may. be made for some of the ingredients, but where such substitutions are made some of the benefits are lost. Thus, dry or white shellac might be used instead of the varnish; or, paper flour or flour asbestos could be substituted for the wood flour. In oer- K tain instances, Benzol might be substituted for the Toluol.

Other changes can be made without departing from the spirit or the scope of my invention, but what I claim as new is: v

A mouldable plastic composition for use as an insulator comprising rosin, 7 lbs.; varnish, substantially 2% lbs.; Wood flour, 2 lbs.; and

Toluol, substantially 2%; lbs.

EBERHARD F. MEES. 

